Finding the Fourth Proportional to 648,217,208.68, 894,539,791.70 and 354,861,776.68
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Solution
The fourth proportional to 648,217,208.68, 894,539,791.70 and 354,861,776.68 is: 489,709,275.75
Step by Step Solution
- Step 1: Write the proportion equation
648,217,208.68 : 894,539,791.70 = 354,861,776.68 : x - Step 2: Convert to fraction form
648,217,208.68/894,539,791.70 = 354,861,776.68/x - Step 3: Cross multiply
648,217,208.68x = 894,539,791.70 × 354,861,776.68 - Step 4: Simplify right side
648,217,208.68x = 317,437,979,790,939,200 - Step 5: Solve for x
x = 317,437,979,790,939,200/648,217,208.68 - Step 6: Final answer
x = 489,709,275.75
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.